testsuite: support reboot to retry intermittent tests
When a test fails intermittently there is currently no alternative to
looking at logs and pressing a hardware reset button. This commit
adds a Kconfig option that can be set when diagnosing an intermittent
failure. The behavior is to do a cold reset of the board when the
test passes. A counter is maintained in noinit memory to track the
number of times it takes to reproduce a failure.
Signed-off-by: Peter Bigot <peter.bigot@nordicsemi.no>
diff --git a/subsys/testsuite/ztest/Kconfig b/subsys/testsuite/ztest/Kconfig
index 52e0efa3..8e4aa73 100644
--- a/subsys/testsuite/ztest/Kconfig
+++ b/subsys/testsuite/ztest/Kconfig
@@ -49,6 +49,14 @@
The override header may now #define the various macros and strings in tc_util.h which are
surrounded by #ifndef ... #endif blocks.
+config ZTEST_RETEST_IF_PASSED
+ bool "Reset the board to test again if the test passed"
+ select REBOOT
+ help
+ If the test passed reset the board so it is run again. This
+ may be used as an alternative to manual resets when
+ attempting to reproduce an intermittent failure.
+
endif # ZTEST
config ZTEST_MOCKING
diff --git a/subsys/testsuite/ztest/src/ztest.c b/subsys/testsuite/ztest/src/ztest.c
index 4825d91..f6ec059 100644
--- a/subsys/testsuite/ztest/src/ztest.c
+++ b/subsys/testsuite/ztest/src/ztest.c
@@ -10,6 +10,7 @@
#ifdef CONFIG_USERSPACE
#include <sys/libc-hooks.h>
#endif
+#include <power/reboot.h>
#ifdef KERNEL
static struct k_thread ztest_thread;
@@ -323,5 +324,27 @@
z_init_mock();
test_main();
end_report();
+ if (IS_ENABLED(CONFIG_ZTEST_RETEST_IF_PASSED)) {
+ static __noinit struct {
+ u32_t magic;
+ u32_t boots;
+ } state;
+ const u32_t magic = 0x152ac523;
+
+ if (state.magic != magic) {
+ state.magic = magic;
+ state.boots = 0;
+ }
+ state.boots += 1;
+ if (test_status == 0) {
+ PRINT("Reset board #%u to test again\n",
+ state.boots);
+ k_sleep(K_MSEC(10));
+ sys_reboot(SYS_REBOOT_COLD);
+ } else {
+ PRINT("Failed after %u attempts\n", state.boots);
+ state.boots = 0;
+ }
+ }
}
#endif
